About 48,000 of the up to 60,000 people who came into Ceuta from Morocco returned within a day. Still, the sudden influx created a crisis for Spain’s pro-immigration government. Nearly three dozen ...

Contains music by Marion Lozano Rowan Niemisto and Pat McCusker Engineered by Alyssa Moxley For years, a debate has been simmering in Silicon Valley over the right way to build artificial intelligence ...